chore(deps): bump @koa/cors and oidc-provider in /mock-auth

Bumps [@koa/cors](https://github.com/koajs/cors) to 5.0.0 and updates ancestor dependency [oidc-provider](https://github.com/panva/node-oidc-provider). These dependencies need to be updated together.


Updates `@koa/cors` from 4.0.0 to 5.0.0
- [Changelog](https://github.com/koajs/cors/blob/master/History.md)
- [Commits](koajs/cors@4.0.0...5.0.0)

Updates `oidc-provider` from 8.4.0 to 8.4.5
- [Release notes](https://github.com/panva/node-oidc-provider/releases)
- [Changelog](https://github.com/panva/node-oidc-provider/blob/main/CHANGELOG.md)
- [Commits](panva/node-oidc-provider@v8.4.0...v8.4.5)

---
updated-dependencies:
- dependency-name: "@koa/cors"
  dependency-type: indirect
- dependency-name: oidc-provider
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

mock-auth/package.json

@@ -6,7 +6,7 @@
   },
   "dependencies": {
     "@types/oidc-provider": "^8.4.0",
-    "oidc-provider": "^8.4.0",
+    "oidc-provider": "^8.4.5",
     "tsx": "^3.13.0"
   }
 }